make IndexSet Epetra_Map constr explicit

The new constructor IndexSet(const Epetra_Map &map) was not marked explicit
and caused ambiguous type conversions.

diff --git a/include/deal.II/base/index_set.h b/include/deal.II/base/index_set.h
index 7ac2be254cd0361094a9b1b73bc67f52a67ce9fc..6e3560493c454075f8e36475c834c2e7bbbb8372 100644 (file)
--- a/include/deal.II/base/index_set.h
+++ b/include/deal.II/base/index_set.h
@@ -109,7 +109,7 @@ public:
   /**
    * Constructor from a trilinos Epetra_Map.
    */
-  IndexSet(const Epetra_Map &map);
+  explicit IndexSet(const Epetra_Map &map);
 #endif
 
   /**